USB GPS by DeLorme

[Roger Oberholtzer]

On Wed, 2004-01-21 at 20:51, Matthew Carpenter wrote:
> Hi Roger-
> do you actually modprobe the pl2303 in order for it to work?  Without 
> the pl2303 does hid pick it up?  I'm a bit fuzzy over drivers "claiming" 
> the device.  I'm wondering if hid recognizes the device for some STRANGE 
> reason, and if so, how do we pre-empt it?  (btw- I'm using hotplug)

On Gentoo I needed to load it by hand (well, in a config file, but not
hotplug). 

I just plugged it in to a SuSE 9 box (wihout the pl2303 loaded), and I
got this:

 hub.c: new USB device 00:10.0-1, assigned address 2
 usb.c: USB device 2 (vend/prod 0x557/0x2008) is not claimed by any
		active driver.

After a modprobe pl2303, I get:

 usbserial.c: USB Serial support registered for PL-2303
 usbserial.c: PL-2303 converter detected
 usbserial.c: PL-2303 converter now attached to ttyUSB0 (or usb/tts/0
		for devfs)
 pl2303.c: Prolific PL2303 USB to serial adaptor driver v0.10

I expect the effect would be the same if the pl2303 was already loaded.






> 
> Thanks for the input!
> Matthub.c: new USB device 00:10.0-1, assigned address 2
usb.c: USB device 2 (vend/prod 0x557/0x2008) is not claimed by any
active driver.

> 
> 
> Roger Oberholtzer wrote:
> 
> >Perhaps the unit is a Serial-over-USB device. Then a /dev/ttyUSBx entry
> >will be made that is accessed just like a serial port. I have a
> >converter cable that does this so I can hook up serial devices to a USB
> >connector. As always, there are device drivers involved. So, you would
> >need to install the appropriate driver. I use, for example, the pl2303
> >driver. When it is loaded the new /dev/ttyUSBX device is made. That is
> >on Gentoo with devfs. I then access the USB device as /dev/ttyUSBx
> >
> >Should this be the case, check out:
> >
> >	/usr/src/linux/Documentation/usb/usb-serial.txt
> >
> >
> >On Wed, 2004-01-21 at 02:57, Matthew Carpenter wrote:
> >  
> >
> >>gpsdrive supports the DeLorme Earthmate, but has only confirmed it to work with the Serial version.  I'm attempting to provide a Serial interface to the unit.  I know the bit about watching /var/log/messages but was wondering if there was something in /proc which might be a more precise mechanism.  I wondered if someone out there who knows more about USB in linux than I do might answer.  I wondered if perhaps /dev/usb/??? or /dev/ttyUSB?? might be the default...  As it is the Earthmate shows up as a "hid" device and appears to be assigned to /dev/usb/hiddev0 but I've been thus far unable to access it there...
> >>
> >>
> >>On Tue, 20 Jan 2004 15:42:24 -0500
> >>Bruce Marshall <bmarsh at bmarsh.com> wrote:
> >>
> >>    
> >>
> >>>On Tuesday 20 January 2004 14:11, Matthew Carpenter wrote:
> >>>      
> >>>
> >>>>How do I tell how to access a new USB device?
> >>>>
> >>>>I'm looking through Kinfocenter and wondering why they don't include that
> >>>>information in the USB section (like, device to access it.. a duh!) And I
> >>>>got to wondering how they'd implement that.  Does anyone have a superior
> >>>>understanding of USB and wish to take a stab at determining what device to
> >>>>access a USB device through?  For this example, use 2.4.21, or SuSE 9.0pro.
> >>>>
> >>>>The challenge is set.  Thanks
> >>>>Matt
> >>>>
> >>>>ps.  The need is to access a USB GPS from DeLorme, called the Earthmate.
> >>>>        
> >>>>
> >>>Can I ask what you are going to use for software to deal with the Earthmate?
> >>>
> >>>
> >>>-- 
> >>>+----------------------------------------------------------------------------+
> >>>+ Bruce S. Marshall  bmarsh at bmarsh.com  Bellaire, MI         01/20/04 15:42  +
> >>>+----------------------------------------------------------------------------+
> >>>"Nobody can be as agreeable as an uninvited guest."
> >>>
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> >>>
> >>>      
> >>>
> >
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> >
> >  
> >
> 
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